| bloodless(quiet, friendly, peace, serene) |
| carefree(adjective, feature, state, quiet, light) |
| comfortable(adjective, quiet, light, smooth, simple) |
| control(noun, verb, order, quiet, cool) |
| cool it(verb, expression, phrasal verb, dull, quiet) |
| defuse(verb, ease, resolve, soothe, pacify) |
| disinterested(adjective, quiet, cool, relaxed, indifferent) |
| doldrums(noun, quiet, rest, peace, calmness) |
| dulcify(verb, quiet, ease, relax, relieve) |
| ebb(verb, quiet, cool, fall, moderate) |
| flat(adjective, cool, weak, kind, smooth) |
| grave(adjective, cool, sensible, restrained, sober) |
| happy-go-lucky(adjective, feature, state, happy, mild) |
| idle(adjective, gentle, still, inactive, passive) |
| idyllic(adjective, peaceful) |
| listless(adjective, quiet, cool, relaxed, still) |
| reasonable(adjective, quiet, sound, soft, moderate) |
| resting(adjective, dead, peaceful, tranquil, motionless) |
| restrain(verb, control, order, quiet, cool) |
| sang-froid(noun, poise, calmness, composure, dignity) |